Congrats on finding out your having a little boy. I had a LLP when I was preg with Noah. It was only 1cm clear too. I was to have a repeat scan at 32 weeks to see if it had moved, but as Noah was breech the whole way through they didn't bother with the scan until 36 weeks. At this stage it was far enough clear but Noah stayed breech so the c sectioned me any way.

Even if your placenta isn't clear enough at 32 weeks, insist on another scan at around 36 weeks. There is every chance that it could have cleared enough space for bub

Goodluck.